I think ad tech is probably the single most destructive technology of the new millennium. The shift toward "engagement at all costs" business strategies is basically the root cause of societies current political polarization. Engagement bait cultivates fear and rage in the populace to get clicks. We are now seeing the consequences of shoving ads that sow fear, anger, doubt and inadequacy into peoples faces 24/7. This doesn't even touch on the fact that mass surveillance is only possible because of the technologies forged by the Ad tech industry.

Well I'm not sure I entirely believe this myself, but it seems easy enough to argue that this is progress of a sort.

The West assumes pure democracy as the final form of government that we are all convergently evolving towards. But if this form of government or society is not robust to the kinds of things you're talking about, should it not suffer the consequences and be adapted or flushed for our long-term betterment?

It seems a bit like saying the French Revolution was the most destructive thing to happen in the history of France. Sure, in the short term. But it also paved the way for modern liberal democracy.